EP4157597A1 - Robot application development system - Google Patents

Robot application development system

Info

Publication number
EP4157597A1
EP4157597A1 EP20728032.2A EP20728032A EP4157597A1 EP 4157597 A1 EP4157597 A1 EP 4157597A1 EP 20728032 A EP20728032 A EP 20728032A EP 4157597 A1 EP4157597 A1 EP 4157597A1
Authority
EP
European Patent Office
Prior art keywords
robot
robot application
gripper finger
work piece
information
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
EP20728032.2A
Other languages
German (de)
French (fr)
Inventor
Fan Dai
Nuo LI
Sebastian Breisch
Debora CLEVER
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ABB Schweiz AG
Original Assignee
ABB Schweiz AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by ABB Schweiz AG filed Critical ABB Schweiz AG
Publication of EP4157597A1 publication Critical patent/EP4157597A1/en
Pending legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25J—MANIPULATORS; CHAMBERS PROVIDED WITH MANIPULATION DEVICES
    • B25J15/00—Gripping heads and other end effectors
    • B25J15/0033—Gripping heads and other end effectors with gripping surfaces having special shapes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25J—MANIPULATORS; CHAMBERS PROVIDED WITH MANIPULATION DEVICES
    • B25J9/00—Program-controlled manipulators
    • B25J9/16—Program controls
    • B25J9/1602—Program controls characterised by the control system, structure, architecture
    • B25J9/1605—Simulation of manipulator lay-out, design, modelling of manipulator
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25J—MANIPULATORS; CHAMBERS PROVIDED WITH MANIPULATION DEVICES
    • B25J15/00—Gripping heads and other end effectors
    • B25J15/08—Gripping heads and other end effectors having finger members
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25J—MANIPULATORS; CHAMBERS PROVIDED WITH MANIPULATION DEVICES
    • B25J19/00—Accessories fitted to manipulators, e.g. for monitoring, for viewing; Safety devices combined with or specially adapted for use in connection with manipulators
    • B25J19/007—Means or methods for designing or fabricating manipulators
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25J—MANIPULATORS; CHAMBERS PROVIDED WITH MANIPULATION DEVICES
    • B25J9/00—Program-controlled manipulators
    • B25J9/16—Program controls
    • B25J9/1656—Program controls characterised by programming, planning systems for manipulators
    • B25J9/1671—Program controls characterised by programming, planning systems for manipulators characterised by simulation, either to verify existing program or to create and verify new program, CAD/CAM oriented, graphic oriented programming systems
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B2219/00—Program-control systems
    • G05B2219/30—Nc systems
    • G05B2219/39—Robotics, robotics to robotics hand
    • G05B2219/39409—Design of gripper, hand
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B2219/00—Program-control systems
    • G05B2219/30—Nc systems
    • G05B2219/39—Robotics, robotics to robotics hand
    • G05B2219/39466—Hand, gripper, end effector of manipulator

Definitions

  • the invention relates to a robot application development system, a robot application development method, as well as a corresponding computer program.
  • a gripper finger of the industrial robot defines an important part of the application.
  • gripper finger design in particular CAD-based gripper finger design is done almost separately from the robot application development process by a CAD engineer with CAD systems he gets used to.
  • Simple web-tools are known, where people can upload CAD model of the work piece, select a gripper type, configure the positions and sized and the tool generates STL files of 3D printing of the gripper fingers. All these steps are separated from the robot application development process or tool environment.
  • a robot application engineer has no appropriate tool support. He must gain knowledge of CAD system and of finger design or relay on external services. In any case, the gripper finger design is performed manually.
  • a robot application development system comprises a robot application unit, configured for determining a robot application for an industrial robot processing a work piece, wherein the robot application defines the industrial robot in a robot workspace, an input interface, configured for receiving robot application information characterizing the robot application, an object data interface, configured for receiving work piece information characterizing the work piece, and a gripper finger design unit, configured for determining a gripper finger design of a gripper finger of the industrial robot.
  • the robot application unit is configured for determining the robot application, using the robot application information.
  • the gripper finger design unit is configured for determining the gripper finger design, using the work piece information and the robot application information.
  • gripper finger design comprises a shape of the gripper finger.
  • the gripper finger design comprises a shape of openings in the gripper finger and/or a position of the openings in the gripper finger.
  • processing the work piece comprises assembly of a work piece from a plurality of work piece parts. This preferably includes sticking, screwing, pressing and the like.
  • the gripper finger design unit is configured for automatically determining the gripper finger design using the work piece information and the robot application information. Further preferably, the gripper finger design unit is configured for at least partially automatically determining the gripper finger design.
  • the robot application unit preferably provides robot application design functions, allowing a user to load or create 3D models of work pieces and the industrial robot.
  • the work piece information comprises a description of the work piece, a product structure, in case the work piece has to be assembled, an object type information, in particular a screw of a registered jack, additional design features, which a mechanic engineer uses to design the work piece, in particular alignment axis or planes, and/or manufacturing information, in particular a weight of the work piece or a force to be applied to the work piece.
  • the gripper finger design unit determines the gripper finger design considering a secure grasp of the work piece, a minimal weight of the of the gripper finger and/or a minimal foot print of the gripper finger.
  • a user uses robot application, or in other words a robot application software, to execute the desired operations of the robot.
  • the determined robot application can be a virtual robot application, in other words a simulated robot application, or a real robot application.
  • the gripper finger design unit is configured for integrating a plurality of gripper finger designs in one single gripper finger design based on the provided robot application information and the work piece information.
  • the gripper finger design unit is configured for locally clustering tasks, even if different types of gripper finger designs are necessary.
  • the gripper finger design unit is able to integrate two or more gripper finger designs in one gripper finger design, and thus in one gripper finger, changing the gripper finger during the robot application can be avoided.
  • the gripper finger design is integrated into a robot application development environment, in particular the described robot application development system. Consequently, direct support is provided to a robot application engineer to design the gripper finger based on the robot application. Furthermore, a possibility for seamlessly adjusting the gripper finger design and the robot application as a whole.
  • the gripper finger design and the robot application can be adjusted automatically by the robot application design system, or manually by the user or semi- automatically by the robot application design system and the user, as a whole.
  • the robot application information comprises a robot workspace layout, at least one action of the industrial robot, a movement of the industrial robot.
  • the robot application information contains information about a type of action of the industrial robot, or in particular the gripper finger.
  • the robot application information defines if a work piece, or a part of the work piece, is swept or pressed or twisted or screwed during the robot application.
  • the robot application unit is configured that the robot application information is defined or adjusted by a user.
  • the gripper finger design unit is configured for at least partially automatically determining the gripper finger design considering the robot workspace layout, at least one action of the industrial robot and a movement of the industrial robot.
  • the gripper finger design unit is configured for considering any obstacles in the robot workspace that might lead to a collision with the gripper finger during robot application.
  • the gripper finger design comprises at least one opening for grasping, a grasping position and/or a grasping orientation.
  • the gripper finger design comprises openings, or in other words indentations, in shape orientation and amount tailored to the robot application.
  • the gripper finger design unit is configured for automatically determining a default gripper finger design, using the work piece information and the robot application information.
  • the default gripper finger design relates to gripper finger design that is automatically determined by the gripper finger design unit and presented to the user as a default option instead of a generic gripper finger design that has not yet a connection to the robot application.
  • the gripper finger design unit is configured for automatically determining a default grasping position and/or a default grasping orientation.
  • gripper finger design unit is configured for adjusting the grasping position and/or the grasping orientation based on the default grasping position and user input.
  • an improve robot application development system is provided.
  • the gripper finger design unit is configured for automatically determining a plurality of possible grasping positions and/or grasping orientations.
  • the gripper finger design unit considers the provided work piece information and the robot application information to suggest possible grasping positions and/or grasping orientations to the user.
  • the work piece information comprises geometry information of the work piece.
  • the input interface is configured for inputting the robot application information by a user.
  • the input interface allows a user to load 3D models of the objects involved, in other words the at least one work piece, obstacles, industrial robots, in the robot application from the CAD database into the robot application development system.
  • the gripper finger design unit is configured for generating CAD data of the work piece for 3D printing of the gripper finger based on the gripper finger design.
  • the gripper finger design unit is configured for directly exporting the CAD for 3D printing the gripper finger.
  • the gripper finger design unit is configured for storing the CAD data for later use.
  • the CAD data comprises a STL file for 3D printing.
  • an improve robot application development system is provided.
  • the object data interface is configured for receiving the work piece information from a CAD database.
  • the object data interface is configured for receiving the work piece information from the CAD database by loading the work piece information by a user.
  • the robot application development system comprises a simulation unit, configured for providing simulation functions of the robot application.
  • the simulation functions are configured for test running the robot application, in particular in view of the gripper finger design and the robot application information.
  • simulation functions are integrated into the robot application development system.
  • the simulation unit is preferably configured for simulating the robot application with the at least partially automatically determined gripper finger design. After an adjustment of the gripper finger design by the user, the simulation unit is configured to rerun the simulation of the robot application with the adjusted gripper finger design.
  • the input interface comprises a user interface configured for user interaction.
  • the user interface preferably comprises 2D user interface elements.
  • the robot application development system comprises a 3D view unit, providing at least one 3D view of the robot workspace layout, wherein the robot workspace layout comprises the industrial robot and the work piece involved in the robot application.
  • the 3D view unit thus provides at least one 3D view of the automatically determined gripper finger design, which the user then can fine-tune manually.
  • the input interface is configured for allowing the user to directly manipulate the 3D view of the robot workspace layout.
  • the input interface is configured for allowing the user to directly manipulate the gripper finger design, in particular adjusting the grasping position and/or grasping orientation in the 3D view of the robot workspace layout.
  • the present invention also relates to a robot application development method, comprising the following steps. Receiving robot application information characterizing the robot application. Receiving work piece information characterizing a work piece. Determining a robot application for an industrial robot processing the work piece, wherein the robot application defines the industrial robot in a robot workspace. Determining a gripper finger design of a gripper finger of the industrial robot. The robot application is determined using the robot application information. The gripper finger design is determined using the work piece information and the robot application information.
  • the robot application development method is a computer-implemented method.
  • the present invention also relates to a computer program that when it is executed on a robot application development system, as described herein, instructs the robot application development system to execute steps of a robot application development method, as described herein.
  • Fig.1 schematically shows a robot application development system
  • Fig.2 schematically shows a gripper finger holding a work piece shown by a 3D view unit
  • Fig .3 schematically shows a robot application development method
  • Fig. 4a shows a perspective view of a gripper finger holding a first work piece
  • Fig. 4b shows a perspective view of a gripper finger holding a second work piece
  • Fig 4c shows a perspective view of a gripper finger
  • Fig. 5a shows a schematic view of a gripper finger blank and a work piece
  • Fig. 5b shows a schematic view of a gripper finger in position of a work piece
  • Fig. 5c shows a schematic view of a gripper finger with a swept intersecting portion
  • Fig. 5d shows a schematic view of a final gripper finger.
  • Fig.1 shows a schematic view of a robot application development system 10.
  • the robot application development system 10 comprises a robot application unit 20, a gripper finger design unit 30, an input interface 40, an object data interface 50, a 3D view unit 60 and a simulation unit 70.
  • the robot application development system 10 in this case is a robot application development software, which is used by a user U to develop a robot application A.
  • the robot application A comprises a configuration of an industrial robot processing a work piece in a robot workspace.
  • a physical or simulated implementation of the robot application A is referred to as robot system 80.
  • the robot application development system 10 is also used by the user U to design a gripper finger design G for a gripper finger of the industrial robot, used in the robot application A.
  • the gripper finger design G is used to build a fitting gripper finger for the industrial robot in the specific robot application A.
  • the gripper finger is 3D printed by a 3D printing unit 90 based on the gripper finger design G determined by the robot application development system 10.
  • the input interface 40 is configured for receiving robot application information IA from the user U.
  • the robot application information IA comprises all necessary data of the robot application A that should be performed by the robot system 80.
  • the robot application information IA comprises information about an end product, the work piece is processed to by the industrial robot.
  • the robot application information IA comprises an amount of industrial robots used in the robot system 80, as well as a general work space layout and the movement and orientation of the industrial robots.
  • the robot application information IA is provided to the robot application unit 20 and the gripper finger design unit 30.
  • the object data interface 50 is configured for receiving work piece information IW.
  • the work piece information IW comprises CAD data of the work piece and is provided by a CAD database DB.
  • the work piece information IW is provided to the gripper finger design unit 30.
  • the robot application unit 20 is configured for determining the robot application A based on the provided robot application information IA.
  • the gripper finger design unit 30 is configured for determining a gripper finger design G based on the provided robot application information IA and the provided work piece information IW. Consequently, the gripper finger design unit 30 is able to determine the gripper finger design G not only based on the work piece information IW but also considers additional boundaries set out by the robot application A itself. This might include a special direction, in which the gripper finger has to move, an accessibility of the work piece during the robot application, obstacles that are positioned in an obvious movement path of the industrial robot or the gripper finger. For example, the task of the industrial robot itself is also considered, for example, if the work piece has to be swept into an indentation or pressed into an indentation.
  • the user U can input his robot application information IA directly into the 3D view unit 60, for example, by a mouse input or a keyboard input.
  • the 3D view unit 60 provides a 3D view of the robot workspace, showing all objects involved in the robot application A. This includes the industrial robot with its gripper finger and the work piece that the industrial robot processes. In addition, this includes any kind of obstacle.
  • the 3D view unit 60 is provided by robot application functions FA from the robot application unit 20 and by gripper finger functions FG from the gripper finger design unit 30.
  • a 3D view of the robot application A and the gripper finger design G can be provided by the 3D view unit 60 for the user U.
  • the gripper finger design unit 30 automatically provides a default gripper finger design GD.
  • the user U then has the possibilities of adjusting the gripper finger design G dependent on the provided 3D view of the robot application A.
  • the gripper finger design unit 30 provides a plurality of possible grasping positions and/or grasping orientations to the user that are all in line with the provided robot application information IA.
  • the user U then can chose one of the provided possibilities or even amend the gripper finger design G.
  • the simulation unit 70 is also provided with the robot application functions FA and the gripper finger design functions FG and provides its simulation functions FS to the 3D view unit 60.
  • the user U is able to watch a simulation of at least parts of the robot application, or in other words, the processing of the work piece, and base his actions on the simulation functions FS.
  • the simulation unit 70 in other words, runs a simulated test run of the robot application A with the presently proposed gripper finger G or in a first step with the default gripper finger GD.
  • the simulation results S are then provided back to the robot application unit 20 and/or the gripper finger design unit 30.
  • the simulation results S may comprise information about possible collisions of the industrial robot or the gripper finger, as well as problems in the gripping process like shifting of the work piece during the gripping process.
  • the gripper finger design G is provided to a 3D printing unit 90 for printing the gripper finger and the robot application A is provided to a robot system 80, implementing the robot application A.
  • the robot application development system 10 provides an improved robot application A with an improved gripper finger design G.
  • the robot application development system is implemented as programmed software modules or procedures, respectively; however, one skilled in the art will understand that the robot application development system can be implemented fully or partially in hardware.
  • Fig.2 schematically shows a gripper finger 110 of an industrial robot 100 holding a work piece 120 shown by the 3D view unit 60.
  • the work piece 120 is a first work piece 120 being a head of a figure.
  • the head should be insert into the body of the figure, which in this case is a second work piece 130.
  • the robot application information IA comprised the information that in the robot application A an obstacle 140 in form of a cube will be present due to the production process. Consequently, in order to avoid a collision of the industrial robot 100 with the obstacle 140, a grasping position must also consider the insertion motion, in this case from top downwards.
  • any indentation or opening of the gripper finger 110 which is used for grasping the first work piece 130 needs to consider this special circumstance.
  • the indentation of the gripper finger 110 for holding the work piece 120 might need a steeper shape due to the direction of the grasp, compared to a scenario without the obstacle 140.
  • the 3D view unit 60 also comprises a user interface Ul for the user U to directly adjust the grasping position as well as any other property of the gripper finger 110, like length or size of the fingers of the gripper finger 110.
  • the user interface Ul allows the user U to change the angel of grasping of the gripper finger 110 in three dimension, marked by the first angle regulator UI1, the second angel regulator UI2 and the third angle regulator UI3.
  • the gripper finger 110 shown in the 3D view, in this case, has been automatically determined by a default gripper finger design GD based on the provided robot application information IA and the provided work piece information IW. The user consequently only has to provide slight amendments to the gripper finger 110, if any amendments are necessary at all.
  • Fig .3 schematically shows a robot application development method comprising the following steps.
  • robot application information characterizing the robot application is received.
  • work piece information characterizing the work piece is received.
  • a robot application for an industrial robot processing a work piece is determined, wherein the robot application defines the industrial robot in a robot workspace.
  • a gripper finger design of a gripper finger of the industrial robot is determined, wherein the robot application is determined using the robot application information and wherein the gripper finger design is determined using the work piece information and the robot application information.
  • Fig. 4a -4c shows a perspective view of a gripper finger 210 of another embodiment, capable of holding a third work piece 220 and a fourth work piece 230.
  • the gripper finger design unit 30 that provided the gripper finger design G was able to provide the gripper finger 210 with a first indentation 11 and a second indentation I2, wherein the first indentation 11 is used for grasping the fourth work piece 230 and the second indentation I2 is used for grasping the third work piece 220.
  • the first indentation 11 includes an unusual angle for holding the third work piece 220.
  • the gripper finger design unit 30 was able to provide the depicted gripper finger design.
  • Fig. 5a- 5d show a schematic view of generating a geometry of the gripper finger design.
  • a gripper finger blank 310a is set near a fifth work piece 320.
  • the gripper finger design unit 30 determines a depth of grasping the fifth work piece 320 and overlaps the gripper finger blank 310a with the fifth work piece 230. Overlapping portions are determined to be openings. In this case, the openings are determined as third indentation I3 and fourth indentation I4. This leads to an intermediate gripper finger 310b.
  • the gripper finger design unit 30 artificially increases the shape of the fifth work piece 320 at the indentations, considering the grasping direction.
  • a fifth indentation I5 and a sixth indentation I6 is determined, finalizing the gripper finger design 310c for the specific robot application A.
  • two gripper finger designs are integrated in one single gripper finger design. Thus, changing the gripper finger during the robot application can be avoided.
  • the gripper finger design unit 30 is configured for optionally enlarging the cut volume for the indentations to consider tolerances, which are preferably provided by the robot application information. Additionally, the gripper finger design unit 30 is preferably configured for smoothing or chamfering the edges of the gripper finger design 310c based on the robot application information. In a final step, the gripper finger design unit 30 is preferably configured for cutting unnecessary areas from the gripper finger design 310c to minimize a size and weight of the gripper finger design 310c.
  • the gripper finger design unit 30 is provided with the robot application information, the gripper finger design unit 30 is able to consider more complex sweep paths.

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  • Engineering & Computer Science (AREA)
  • Robotics (AREA)
  • Mechanical Engineering (AREA)
  • Automation & Control Theory (AREA)
  • Manipulator (AREA)

Abstract

Robot application development system (10), comprising a robot application unit (20), configured for determining a robot application (A) for an industrial robot processing a work piece, wherein the robot application (A) defines the industrial robot (100) in a robot workspace; an input interface (40), configured for receiving robot application information (IA) characterizing the robot application (A); an object data interface (50), configured for receiving work piece information (IW) characterizing the work piece (120); and a gripper finger design unit (30), configured for determining a gripper finger (110) design (G) of a gripper finger (110) of the industrial robot (100); wherein the robot application unit (20) is configured for determining the robot application (A), using the robot application information (IA); wherein the gripper finger design unit (30) is configured for determining the gripper finger design (G), using the work piece information (IW) and the robot application information (IA).

Description

ROBOT APPLICATION DEVELOPMENT SYSTEM
FIELD OF THE INVENTION
The invention relates to a robot application development system, a robot application development method, as well as a corresponding computer program.
BACKGROUND OF THE INVENTION
For robot application with industrial robots, a gripper finger of the industrial robot defines an important part of the application. Today, gripper finger design, in particular CAD-based gripper finger design is done almost separately from the robot application development process by a CAD engineer with CAD systems he gets used to. Simple web-tools are known, where people can upload CAD model of the work piece, select a gripper type, configure the positions and sized and the tool generates STL files of 3D printing of the gripper fingers. All these steps are separated from the robot application development process or tool environment. A robot application engineer has no appropriate tool support. He must gain knowledge of CAD system and of finger design or relay on external services. In any case, the gripper finger design is performed manually.
DESCRIPTION OF THE INVENTION
It is therefore an objective of the invention to provide an improved robot application development system. This objective is achieved by a robot application development system and method according to the independent claims. Further preferred embodiments are evident from the dependent patent claims.
According to the invention, a robot application development system, comprises a robot application unit, configured for determining a robot application for an industrial robot processing a work piece, wherein the robot application defines the industrial robot in a robot workspace, an input interface, configured for receiving robot application information characterizing the robot application, an object data interface, configured for receiving work piece information characterizing the work piece, and a gripper finger design unit, configured for determining a gripper finger design of a gripper finger of the industrial robot. The robot application unit is configured for determining the robot application, using the robot application information. The gripper finger design unit is configured for determining the gripper finger design, using the work piece information and the robot application information.
The term “gripper finger design”, as used herein, comprises a shape of the gripper finger. In other words, the gripper finger design comprises a shape of openings in the gripper finger and/or a position of the openings in the gripper finger.
Preferably, processing the work piece comprises assembly of a work piece from a plurality of work piece parts. This preferably includes sticking, screwing, pressing and the like.
Preferably, the gripper finger design unit is configured for automatically determining the gripper finger design using the work piece information and the robot application information. Further preferably, the gripper finger design unit is configured for at least partially automatically determining the gripper finger design.
The robot application unit preferably provides robot application design functions, allowing a user to load or create 3D models of work pieces and the industrial robot.
Preferably, the work piece information comprises a description of the work piece, a product structure, in case the work piece has to be assembled, an object type information, in particular a screw of a registered jack, additional design features, which a mechanic engineer uses to design the work piece, in particular alignment axis or planes, and/or manufacturing information, in particular a weight of the work piece or a force to be applied to the work piece.
Preferably, the gripper finger design unit determines the gripper finger design considering a secure grasp of the work piece, a minimal weight of the of the gripper finger and/or a minimal foot print of the gripper finger. Preferably, a user uses robot application, or in other words a robot application software, to execute the desired operations of the robot. Furthermore, the determined robot application can be a virtual robot application, in other words a simulated robot application, or a real robot application.
Preferably, the gripper finger design unit is configured for integrating a plurality of gripper finger designs in one single gripper finger design based on the provided robot application information and the work piece information. In other words, the gripper finger design unit is configured for locally clustering tasks, even if different types of gripper finger designs are necessary. When the gripper finger design unit is able to integrate two or more gripper finger designs in one gripper finger design, and thus in one gripper finger, changing the gripper finger during the robot application can be avoided.
Thus, the gripper finger design is integrated into a robot application development environment, in particular the described robot application development system. Consequently, direct support is provided to a robot application engineer to design the gripper finger based on the robot application. Furthermore, a possibility for seamlessly adjusting the gripper finger design and the robot application as a whole.
In addition, the gripper finger design and the robot application can be adjusted automatically by the robot application design system, or manually by the user or semi- automatically by the robot application design system and the user, as a whole.
Thus, an improve robot application development system is provided.
In a preferred variant of the invention, the robot application information comprises a robot workspace layout, at least one action of the industrial robot, a movement of the industrial robot.
In other words, the robot application information contains information about a type of action of the industrial robot, or in particular the gripper finger. For example, the robot application information defines if a work piece, or a part of the work piece, is swept or pressed or twisted or screwed during the robot application. Preferably, the robot application unit is configured that the robot application information is defined or adjusted by a user.
In other words, the gripper finger design unit is configured for at least partially automatically determining the gripper finger design considering the robot workspace layout, at least one action of the industrial robot and a movement of the industrial robot. In other words, the gripper finger design unit is configured for considering any obstacles in the robot workspace that might lead to a collision with the gripper finger during robot application.
Thus, an improve robot application development system is provided.
In a preferred variant of the invention, the gripper finger design comprises at least one opening for grasping, a grasping position and/or a grasping orientation.
Consequently, the gripper finger design comprises openings, or in other words indentations, in shape orientation and amount tailored to the robot application.
Thus, an improve robot application development system is provided.
In a preferred variant of the invention, the gripper finger design unit is configured for automatically determining a default gripper finger design, using the work piece information and the robot application information.
The default gripper finger design relates to gripper finger design that is automatically determined by the gripper finger design unit and presented to the user as a default option instead of a generic gripper finger design that has not yet a connection to the robot application.
Preferably, the gripper finger design unit is configured for automatically determining a default grasping position and/or a default grasping orientation.
Preferably, gripper finger design unit is configured for adjusting the grasping position and/or the grasping orientation based on the default grasping position and user input. Thus, an improve robot application development system is provided.
In a preferred variant of the invention, the gripper finger design unit is configured for automatically determining a plurality of possible grasping positions and/or grasping orientations.
In other words, the gripper finger design unit considers the provided work piece information and the robot application information to suggest possible grasping positions and/or grasping orientations to the user.
Thus, an improve robot application development system is provided.
In a preferred variant of the invention, the work piece information comprises geometry information of the work piece.
In a preferred variant of the invention, the input interface is configured for inputting the robot application information by a user.
Preferably, the input interface allows a user to load 3D models of the objects involved, in other words the at least one work piece, obstacles, industrial robots, in the robot application from the CAD database into the robot application development system.
Thus, an improve robot application development system is provided.
In a preferred variant of the invention, the gripper finger design unit is configured for generating CAD data of the work piece for 3D printing of the gripper finger based on the gripper finger design.
Preferably, the gripper finger design unit is configured for directly exporting the CAD for 3D printing the gripper finger. Alternatively, the gripper finger design unit is configured for storing the CAD data for later use.
Preferably, the CAD data comprises a STL file for 3D printing. Thus, an improve robot application development system is provided.
In a preferred variant of the invention, the object data interface is configured for receiving the work piece information from a CAD database.
Preferably, the object data interface is configured for receiving the work piece information from the CAD database by loading the work piece information by a user.
In a preferred variant of the invention, the robot application development system comprises a simulation unit, configured for providing simulation functions of the robot application.
Preferably, the simulation functions are configured for test running the robot application, in particular in view of the gripper finger design and the robot application information.
In other words, the simulation functions are integrated into the robot application development system.
Consequently, optimization of the developed robot application including the gripper finger design is provided by integrated simulation capabilities avoiding extensive data exchange between CAD and robot simulation software.
The simulation unit is preferably configured for simulating the robot application with the at least partially automatically determined gripper finger design. After an adjustment of the gripper finger design by the user, the simulation unit is configured to rerun the simulation of the robot application with the adjusted gripper finger design.
In a preferred variant of the invention, the input interface comprises a user interface configured for user interaction.
The user interface preferably comprises 2D user interface elements.
In a preferred variant of the invention, the robot application development system comprises a 3D view unit, providing at least one 3D view of the robot workspace layout, wherein the robot workspace layout comprises the industrial robot and the work piece involved in the robot application.
The 3D view unit thus provides at least one 3D view of the automatically determined gripper finger design, which the user then can fine-tune manually.
Consequently, most of the gripper finger design work already is automated before the user manually designs the gripper finger design.
Thus, an improve robot application development system is provided.
In a preferred variant of the invention, the input interface is configured for allowing the user to directly manipulate the 3D view of the robot workspace layout.
Thus, an improve robot application development system is provided.
Preferably, the input interface is configured for allowing the user to directly manipulate the gripper finger design, in particular adjusting the grasping position and/or grasping orientation in the 3D view of the robot workspace layout.
Thus, an improve robot application development system is provided.
The present invention also relates to a robot application development method, comprising the following steps. Receiving robot application information characterizing the robot application. Receiving work piece information characterizing a work piece. Determining a robot application for an industrial robot processing the work piece, wherein the robot application defines the industrial robot in a robot workspace. Determining a gripper finger design of a gripper finger of the industrial robot. The robot application is determined using the robot application information. The gripper finger design is determined using the work piece information and the robot application information.
Preferably, the robot application development method is a computer-implemented method. The present invention also relates to a computer program that when it is executed on a robot application development system, as described herein, instructs the robot application development system to execute steps of a robot application development method, as described herein.
BRIEF DESCRIPTION OF THE DRAWINGS
The subject matter of the invention will be explained in more detail in the following text with reference to preferred exemplary embodiments, which are illustrated in the attached drawings, in which:
Fig.1 schematically shows a robot application development system;
Fig.2 schematically shows a gripper finger holding a work piece shown by a 3D view unit;
Fig .3 schematically shows a robot application development method;
Fig. 4a shows a perspective view of a gripper finger holding a first work piece;
Fig. 4b shows a perspective view of a gripper finger holding a second work piece;
Fig 4c shows a perspective view of a gripper finger;
Fig. 5a shows a schematic view of a gripper finger blank and a work piece;
Fig. 5b shows a schematic view of a gripper finger in position of a work piece;
Fig. 5c shows a schematic view of a gripper finger with a swept intersecting portion; and
Fig. 5d shows a schematic view of a final gripper finger.
The reference symbols used in the drawings, and their meanings, are listed in summary form in the list of reference symbols. In principle, identical parts are provided with the same reference symbols in the figures.
DETAILED DESCRIPTION OF EMBODIMENTS
Fig.1 shows a schematic view of a robot application development system 10. The robot application development system 10 comprises a robot application unit 20, a gripper finger design unit 30, an input interface 40, an object data interface 50, a 3D view unit 60 and a simulation unit 70. The robot application development system 10 in this case is a robot application development software, which is used by a user U to develop a robot application A. The robot application A comprises a configuration of an industrial robot processing a work piece in a robot workspace. A physical or simulated implementation of the robot application A is referred to as robot system 80. The robot application development system 10 is also used by the user U to design a gripper finger design G for a gripper finger of the industrial robot, used in the robot application A. Consequently, the gripper finger design G is used to build a fitting gripper finger for the industrial robot in the specific robot application A. In this case, the gripper finger is 3D printed by a 3D printing unit 90 based on the gripper finger design G determined by the robot application development system 10.
The input interface 40 is configured for receiving robot application information IA from the user U. The robot application information IA comprises all necessary data of the robot application A that should be performed by the robot system 80. For example, the robot application information IA comprises information about an end product, the work piece is processed to by the industrial robot. In addition, the robot application information IA comprises an amount of industrial robots used in the robot system 80, as well as a general work space layout and the movement and orientation of the industrial robots. The robot application information IA is provided to the robot application unit 20 and the gripper finger design unit 30.
The object data interface 50 is configured for receiving work piece information IW. The work piece information IW comprises CAD data of the work piece and is provided by a CAD database DB. The work piece information IW is provided to the gripper finger design unit 30.
The robot application unit 20 is configured for determining the robot application A based on the provided robot application information IA. The gripper finger design unit 30 is configured for determining a gripper finger design G based on the provided robot application information IA and the provided work piece information IW. Consequently, the gripper finger design unit 30 is able to determine the gripper finger design G not only based on the work piece information IW but also considers additional boundaries set out by the robot application A itself. This might include a special direction, in which the gripper finger has to move, an accessibility of the work piece during the robot application, obstacles that are positioned in an obvious movement path of the industrial robot or the gripper finger. For example, the task of the industrial robot itself is also considered, for example, if the work piece has to be swept into an indentation or pressed into an indentation.
In this embodiment, the user U can input his robot application information IA directly into the 3D view unit 60, for example, by a mouse input or a keyboard input. The 3D view unit 60 provides a 3D view of the robot workspace, showing all objects involved in the robot application A. This includes the industrial robot with its gripper finger and the work piece that the industrial robot processes. In addition, this includes any kind of obstacle. The 3D view unit 60 is provided by robot application functions FA from the robot application unit 20 and by gripper finger functions FG from the gripper finger design unit 30.
Thus, a 3D view of the robot application A and the gripper finger design G can be provided by the 3D view unit 60 for the user U. In a first step, based on the robot application information IA and the work piece information IW, the gripper finger design unit 30 automatically provides a default gripper finger design GD.
The user U then has the possibilities of adjusting the gripper finger design G dependent on the provided 3D view of the robot application A. For example, the gripper finger design unit 30 provides a plurality of possible grasping positions and/or grasping orientations to the user that are all in line with the provided robot application information IA. The user U then can chose one of the provided possibilities or even amend the gripper finger design G.
In addition, the simulation unit 70 is also provided with the robot application functions FA and the gripper finger design functions FG and provides its simulation functions FS to the 3D view unit 60. By this, the user U is able to watch a simulation of at least parts of the robot application, or in other words, the processing of the work piece, and base his actions on the simulation functions FS. The simulation unit 70, in other words, runs a simulated test run of the robot application A with the presently proposed gripper finger G or in a first step with the default gripper finger GD. The simulation results S are then provided back to the robot application unit 20 and/or the gripper finger design unit 30. The simulation results S may comprise information about possible collisions of the industrial robot or the gripper finger, as well as problems in the gripping process like shifting of the work piece during the gripping process.
If the user is satisfied with the robot application A and the gripper finger design G, the gripper finger design G is provided to a 3D printing unit 90 for printing the gripper finger and the robot application A is provided to a robot system 80, implementing the robot application A.
Consequently, the robot application development system 10 provides an improved robot application A with an improved gripper finger design G.
Preferably, the robot application development system is implemented as programmed software modules or procedures, respectively; however, one skilled in the art will understand that the robot application development system can be implemented fully or partially in hardware.
Fig.2 schematically shows a gripper finger 110 of an industrial robot 100 holding a work piece 120 shown by the 3D view unit 60. In this case, the work piece 120 is a first work piece 120 being a head of a figure. The head should be insert into the body of the figure, which in this case is a second work piece 130. The robot application information IA comprised the information that in the robot application A an obstacle 140 in form of a cube will be present due to the production process. Consequently, in order to avoid a collision of the industrial robot 100 with the obstacle 140, a grasping position must also consider the insertion motion, in this case from top downwards. In other words, any indentation or opening of the gripper finger 110, which is used for grasping the first work piece 130 needs to consider this special circumstance. In this case, the indentation of the gripper finger 110 for holding the work piece 120 might need a steeper shape due to the direction of the grasp, compared to a scenario without the obstacle 140.
The 3D view unit 60 also comprises a user interface Ul for the user U to directly adjust the grasping position as well as any other property of the gripper finger 110, like length or size of the fingers of the gripper finger 110. In this case, the user interface Ul allows the user U to change the angel of grasping of the gripper finger 110 in three dimension, marked by the first angle regulator UI1, the second angel regulator UI2 and the third angle regulator UI3.
The gripper finger 110, shown in the 3D view, in this case, has been automatically determined by a default gripper finger design GD based on the provided robot application information IA and the provided work piece information IW. The user consequently only has to provide slight amendments to the gripper finger 110, if any amendments are necessary at all.
Fig .3 schematically shows a robot application development method comprising the following steps. In a first step S1, robot application information characterizing the robot application is received. In a second step S2, work piece information characterizing the work piece is received. In a third step, a robot application for an industrial robot processing a work piece is determined, wherein the robot application defines the industrial robot in a robot workspace. In a fourth step, a gripper finger design of a gripper finger of the industrial robot is determined, wherein the robot application is determined using the robot application information and wherein the gripper finger design is determined using the work piece information and the robot application information.
Fig. 4a -4c shows a perspective view of a gripper finger 210 of another embodiment, capable of holding a third work piece 220 and a fourth work piece 230. The gripper finger design unit 30 that provided the gripper finger design G was able to provide the gripper finger 210 with a first indentation 11 and a second indentation I2, wherein the first indentation 11 is used for grasping the fourth work piece 230 and the second indentation I2 is used for grasping the third work piece 220.
It can be seen in Fig. 4c, that the first indentation 11 includes an unusual angle for holding the third work piece 220. However, due to the combined robot application information IA and the work piece information IW, the gripper finger design unit 30 was able to provide the depicted gripper finger design.
Fig. 5a- 5d show a schematic view of generating a geometry of the gripper finger design. A gripper finger blank 310a is set near a fifth work piece 320. The gripper finger design unit 30 determines a depth of grasping the fifth work piece 320 and overlaps the gripper finger blank 310a with the fifth work piece 230. Overlapping portions are determined to be openings. In this case, the openings are determined as third indentation I3 and fourth indentation I4. This leads to an intermediate gripper finger 310b. However, due to a known direction of grasping, the gripper finger design unit 30 artificially increases the shape of the fifth work piece 320 at the indentations, considering the grasping direction. Consequently, a fifth indentation I5 and a sixth indentation I6 is determined, finalizing the gripper finger design 310c for the specific robot application A. In this case, two gripper finger designs are integrated in one single gripper finger design. Thus, changing the gripper finger during the robot application can be avoided.
In addition, the gripper finger design unit 30 is configured for optionally enlarging the cut volume for the indentations to consider tolerances, which are preferably provided by the robot application information. Additionally, the gripper finger design unit 30 is preferably configured for smoothing or chamfering the edges of the gripper finger design 310c based on the robot application information. In a final step, the gripper finger design unit 30 is preferably configured for cutting unnecessary areas from the gripper finger design 310c to minimize a size and weight of the gripper finger design 310c.
It is pointed out that compared to described relatively simple method for sweep cutting, because the gripper finger design unit 30 is provided with the robot application information, the gripper finger design unit 30 is able to consider more complex sweep paths.
LIST OF REFERENCE SYMBOLS
10 robot application development system
20 robot application unit
30 gripper finger design unit
40 input interface
50 object data interface
60 3D view unit
70 simulation unit
80 robot system
90 3D printing unit
100 industrial robot
110 gripper finger
120 first work piece
130 second work piece
140 obstacle
210 gripper finger
220 third work piece
230 fourth work piece
310a gripper finger blank
310b intermediate gripper finger
310c gripper finger design
320 fifth work piece
330 sixth work piece
11 first indentation
12 second indentation
13 third indentation
14 fourth indentation
15 fifth indentation
16 sixth indentation
A robot application
G gripper finger design
GD default gripper finger design
IA robot application information
IW work piece information
FA robot application functions FG gripper finger design functions
FS simulation functions
S simulation output
U user DB CAD database
Ul user interface
UI1 first angle regulator
UI2 second angle regulator
UI3 third angle regulator S1 first step
52 second step
53 third step
54 fourth step

Claims

Claims 1. Robot application development system (10), comprising a robot application unit (20), configured for determining a robot application (A) for an industrial robot processing a work piece, wherein the robot application (A) defines the industrial robot (100) in a robot workspace; an input interface (40), configured for receiving robot application information (IA) characterizing the robot application (A); an object data interface (50), configured for receiving work piece information (IW) characterizing the work piece (120); and a gripper finger design unit (30), configured for determining a gripper finger (110) design (G) of a gripper finger (110) of the industrial robot (100); wherein the robot application unit (20) is configured for determining the robot application (A), using the robot application information (IA); wherein the gripper finger design unit (30) is configured for determining the gripper finger design (G), using the work piece information (IW) and the robot application information (IA).
2. Robot application development system of any of the preceding claims, wherein the robot application information (IA) comprises a robot workspace layout, at least one action of the industrial robot (100), a movement of the industrial robot (100).
3. Robot application development system of any of the preceding claims, wherein the gripper finger design (G) comprises at least one opening for grasping, a grasping position and/or a grasping orientation.
4. Robot application development system of any of the preceding claims, wherein the gripper finger design unit (30) is configured for automatically determining a default gripper finger design (GD), using the work piece information (IW) and the robot application information (IA).
5. Robot application development system of any of the preceding claims, wherein the gripper finger design unit (30) is configured for automatically determining a plurality of possible grasping positions and/or grasping orientations.
6. Robot application development system of any of the preceding claims, wherein the work piece information (IW) comprises geometry information of the work piece (120).
7. Robot application development system of any of the preceding claims, wherein the input interface (40) is configured for inputting the robot application information (IA) by a user (U).
8. Robot application development system of any of the preceding claims, wherein the gripper finger design unit (30) is configured for generating CAD data of the work piece (120) for 3D printing of the gripper finger (110) based on the gripper finger design (G).
9. Robot application development system of any of the preceding claims, wherein the object data interface (50) is configured for receiving the work piece information (IW) from a CAD database (DB).
10. Robot application development system of any of the preceding claims, comprising a simulation unit (70), configured for providing simulation functions (SF) of the robot application (A).
11. Robot application development system of any of the preceding claims, wherein the input interface (40) comprises a user interface (Ul) configured for user interaction.
12. Robot application development system of any of the preceding claims, comprising a 3D view unit (60), providing at least one 3D view of the robot workspace layout, wherein the robot workspace layout comprises the industrial robot (100) and the work piece (120) involved in the robot application (A).
13. Robot application development system of any of the preceding claims, wherein the input interface (40) is configured for allowing the user (U) to directly manipulate the 3D view of the robot workspace layout.
14. Robot application development method, comprising the steps: receiving (S1) robot application information (IA) characterizing the robot application (A); receiving (S2) work piece information (IW) characterizing a work piece (120); determining (S3) a robot application (A) for an industrial robot (100) processing the work piece (120), wherein the robot application (A) defines the industrial robot (100) in a robot workspace; determining (S4) a gripper finger design (G) of a gripper finger (110) of the industrial robot (100); wherein the robot application (A) is determined using the robot application information (IA); and wherein the gripper finger design (G) is determined using the work piece information (IW) and the robot application information (IA).
15. Computer program that when it is executed on a robot application development system of any of claims 1- 13, instructs the robot application development system to execute steps of a robot application development method of claim 14.
EP20728032.2A 2020-05-25 2020-05-25 Robot application development system Pending EP4157597A1 (en)

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